# Expand(float)

> Expands the AABB by the given signed distance.

## Definition

* **Type:** Method
* **Namespace:** [Unity.Mathematics.Geometry](/engine/6000.5/script-reference/unity/mathematics/geometry.md)
* **Assembly:** UnityEngine.MathematicsModule

```csharp
public void Expand(float signedDistance)
```

### Parameters

**** (\[float]\(https\://learn.microsoft.com/dotnet/api/system.single)): Signed distance to expand the AABB with.

### Remarks

Positive distance expands the AABB while negative distance shrinks the AABB.